6ed982a221
VFP code to store the old context, with lazy loading of the new context when needed. FPU_KERN_NOCTX is missing as this is unused in the crypto code this has been tested with, and I am unsure on the requirements of the UEFI Runtime Services. Reviewed by: kib Obtained from: ABT Systeems Ltd Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D8276
78 lines
2.5 KiB
C
78 lines
2.5 KiB
C
/*-
|
|
* Copyright (c) 2001 Jake Burkholder.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _MACHINE_PCB_H_
|
|
#define _MACHINE_PCB_H_
|
|
|
|
#ifndef LOCORE
|
|
|
|
#include <machine/vfp.h>
|
|
|
|
struct trapframe;
|
|
|
|
#define PCB_LR 30
|
|
struct pcb {
|
|
uint64_t pcb_x[31];
|
|
uint64_t pcb_pc;
|
|
/* These two need to be in order as we access them together */
|
|
uint64_t pcb_sp;
|
|
uint64_t pcb_tpidr_el0;
|
|
vm_offset_t pcb_l0addr;
|
|
|
|
/* Fault handler, the error value is passed in x0 */
|
|
vm_offset_t pcb_onfault;
|
|
|
|
u_int pcb_flags;
|
|
#define PCB_SINGLE_STEP_SHIFT 0
|
|
#define PCB_SINGLE_STEP (1 << PCB_SINGLE_STEP_SHIFT)
|
|
|
|
struct vfpstate *pcb_fpusaved;
|
|
int pcb_fpflags;
|
|
#define PCB_FP_STARTED 0x01
|
|
#define PCB_FP_KERN 0x02
|
|
/* The bits passed to userspace in get_fpcontext */
|
|
#define PCB_FP_USERMASK (PCB_FP_STARTED)
|
|
u_int pcb_vfpcpu; /* Last cpu this thread ran VFP code */
|
|
|
|
/*
|
|
* The userspace VFP state. The pcb_fpusaved pointer will point to
|
|
* this unless the kernel has allocated a VFP context.
|
|
* Place last to simplify the asm to access the rest if the struct.
|
|
*/
|
|
struct vfpstate pcb_fpustate;
|
|
};
|
|
|
|
#ifdef _KERNEL
|
|
void makectx(struct trapframe *tf, struct pcb *pcb);
|
|
int savectx(struct pcb *pcb) __returns_twice;
|
|
#endif
|
|
|
|
#endif /* !LOCORE */
|
|
|
|
#endif /* !_MACHINE_PCB_H_ */
|